<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      list-style: none;
      background-color: black;
    }

    html {
      height: 100%;
    }

    body {
      height: 100%;
      display: flex;
      justify-content: center;
    }

    .app {
      height: 100%;
      width: 100%;
      display: flex;
      justify-content: center;
    }

    img {
      width: 500px;
      height: 300px;
    }

    li {
      width: 500px;
      height: 300px;
      border: 5px solid white;
      color: white;
      position: absolute;
    }

    ul {
      width: 510px;
      display: flex;
      justify-content: center;
      align-items: center;
      overflow: hidden;
      position: relative;
    }

    .nav {
      background-color: #c3c3c3;
      color: white;
      margin-left: 10px;
      font-size: 20px;
      border-radius: 50%;
      padding: 0 8px;
      margin-bottom: 10px;
      opacity: 0.5;
    }

    .active {
      opacity: 1;
    }

    li div {
      margin-top: -30px;
    }

    .image-enter-active {
      transition: all 1.5s linear
    }

    .image-leave-active {
      transition: all 1.5s linear;
    }

    .image-enter-to {
      transform: translateX(0);
    }

    .image-enter {
      transform: translateX(100%);
    }

    .image-leave {
      transform: translateX(0);
    }

    .image-leave-to {
      transform: translateX(-100%);
    }
  </style>
</head>

<body>
  <div id="app">
    <div v-on:mouseover="stop()" v-on:mouseout="move()" class="app">
      <transition-group tag="ul" name="image">
        <li v-for="(items,index) in list" v-show="index===num" :key="index">
          <img :src="items" alt="">
          <div>
            <span v-for="(items,index) in data" class="nav" @click="change(index)"
              :class="{'active':index==num}">{{items}}</span>
          </div>
        </li>
      </transition-group>
    </div>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>

  <script>

    new Vue({
      el: '#app',
      data() {
        return {
          data: ['1', '2', '3'],
          time: '',
          num: 0,
          list: ['https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1534136662314&di=af7ec227db5e118a5626a94ab97026f3&imgtype=0&src=http%3A%2F%2Fc.hiphotos.baidu.com%2Fimage%2Fpic%2Fitem%2F4bed2e738bd4b31ccda81d7a8bd6277f9f2ff85f.jpg',
            "https://ss3.baidu.com/-fo3dSag_xI4khGko9WTAnF6hhy/image/h%3D300/sign=4b22ec31ddc8a786a12a4c0e5708c9c7/5bafa40f4bfbfbedc5597ab474f0f736aec31ffc.jpg",
            "https://ss3.baidu.com/9fo3dSag_xI4khGko9WTAnF6hhy/image/h%3D300/sign=87d6daed02f41bd5c553eef461d881a0/f9198618367adab4b025268587d4b31c8601e47b.jpg"],
        }
      },
      methods: {
        play() {
          this.time = setInterval(() => {
            this.num++;
            if (this.num == 3) {
              this.num = 0
            }

          }, 2000)
        },
        change(i) {
          this.num = i
        },
        stop() {
          clearInterval(this.time)
        },
        move() {
          this.play();
        }
      },
      created() {
        this.play();
      },

    })
  </script>
</body>

</html>